23NIBE VVM 300
Installation
Electrical connections
External contacts
Contact for changing the room temperature
An external contact function can be connected to VVM
300 to change the supply temperature and in doing so
change the room temperature, for example, a room ther-
mostat or a timer. The contact should be potential free and
is connected between terminals 3 and 4 on terminal block
(14) on the load monitor card (2).
When the contact is made, the supply temperature is high-
er or lower than the selected curve slope. The value for the
change is set on menu 2.5, External adjustment. The value
is adjustable between -10 and +10. One step corresponds
to one offset step of the heat curve.
Contact for activation of “Extra hot water”
An external contact function can be connected to VVM
300 for activation of the “Temporary extra hot water”
function.
The contact should be potential free and non-locking and
is connected via the edge board connector between posi-
tions 1 and 2 down on the lower part of the left connec-
tion row on the load monitor card (2).
When the contact makes for at least one second, the
“Temporary Extra hot water” function is activated. An au-
tomatic return to the previously set function occurs after 3
hours.
Work behind covers secured by screws may
only be carried out under the supervision
of a qualified installation engineer.
NOTE!
Effektvakt 100
230 Vac
L N
1234 67
8
10 12 13 14
FIGHTER
Huvudsäkring
3 st strömkännare
30.1 30.2
A
B
C
44
4
L1
L2
L3
Effektvakt 100
230 Vac
L N
1234 67
8
10 12 13 14
FIGHTER
Huvudsäkring
3 st strömkännare
30.1 30.2
A
B
C
44
4
L1
L2
L3
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